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Re: Hairy Hypsilophodontids

> Relating this back to the original point, if a basal
> ornithopod
> ("hypsilophodont") were found with structures
> similar to those of the Jehol
> _Psittacosaurus_, it would strongly suggest that the
> trait was present in the
> basal cerapod (_Cerapoda_ ~= _Ornithopoda_ +
> _Marginocephalia_), possibly earlier.

Ah, there we are then! I'm stuck in the world of
Ornithopoda and Neornithopoda, as opposed to the
correct world of Cerapoda and Ornithopoda!

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